- Drain offload transmit queues when RATELIMIT is enabled but
TCP_OFFLOAD is not.
- Expose the per-VI nofldtxq and first_ofld_txq sysctls when
RATELIMIT is enabled but TCP_OFFLOAD is not.
- Clear offload transmit queue stats as part of a 'cxgbetool clearstats'
request when RATELIMIT is enabled but TCP_OFFLOAD is not.
Reviewed by: np
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18966
mean that the driver should taste the firmware in the KLD and use that
firmware's version for all its fw_install checks.
The driver gets firmware version information from compiled-in values by
default and this change allows custom (or older/newer) firmware modules
to be used with the stock driver.
There is no change in default behavior.
MFC after: 1 week
Sponsored by: Chelsio Communications
indicates an error. Also, do not remove it twice from the hf list in
this case.
Submitted by: Krishnamraju Eraparaju @ Chelsio
MFC after: 1 week
Sponsored by: Chelsio Communicatons
ccr reuses the control queue and first rx queue from the first port on
each adapter. The driver cannot send requests until those queues are
initialized. Refuse to create sessions for now if the queues aren't
ready. This is a workaround until cxgbe allocates one or more
dedicated queues for ccr.
PR: 233851
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18478
- Fix PR 227760 by getting the TOE to respond to the SYN after the call
to toe_syncache_add, not during it. The kernel syncache code calls
syncache_respond just before syncache_insert. If the ACK to the
syncache_respond is processed in another thread it may run before the
syncache_insert and won't find the entry. Note that this affects only
t4_tom because it's the only driver trying to insert and expand
syncache entries from different threads.
- Do not leak resources if an embryonic connection terminates at
SYN_RCVD because of L2 lookup failures.
- Retire lctx->synq and associated code because there is never a need to
walk the list of embryonic connections associated with a listener.
The per-tid state is still called a synq entry in the driver even
though the synq itself is now gone.
PR: 227760
MFC after: 2 weeks
Sponsored by: Chelsio Communications
through.
cxgb4vf doesn't own the buffer size list but still expects the first two
entries to be 4K and some power of 2 respectively. The BSD cxgbe
doesn't care where its preferred buffer sizes are as long as they're in
the list somewhere, so just move its entries towards the end as a
workaround.
MFC after: 1 month
Sponsored by: Chelsio Communicatons
card initialization. This is an expanded version of r333682.
Break up prep_firmware into simpler routines while here. Load the
firmware/config KLD only if needed.
MFC after: 1 month
Sponsored by: Chelsio Communications
This fixes builds of kernels without INET6 such as LINT-NOINET6.
Reported by: arybchik
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18384
- Store the clip table in 'struct adapter' instead of in the TOM softc.
- Init the clip table during attach and teardown during detach.
- While here, add a dev.<nexus>.<unit>.misc.clip sysctl to dump the
CLIP table.
This does mean that we update the clip table even if TOE is not enabled,
but non-TOE things need the CLIP table anyway.
Reviewed by: np, Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18010
After the fix contained in r341144, cxgbe does not need anymore
to set the IFCAP_NETMAP flag manually.
Reviewed by: np
Approved by: gnn (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D17987
vmem's are not just used for TLS memory in TOM and the #include actually
predates the TLS code so should not have been removed when the TLS vmem
moved in r340466.
Pointy hat to: jhb
Sponsored by: Chelsio Communications
The key context is always placed immediately after the work request
header. The total work request length has to be rounded up by 16
however.
MFC after: 1 month
Sponsored by: Chelsio Communications
The addresses passed when reading and writing keys are always shifted
right by 5 as the memory locations are addressed in 32-byte chunks, so
the quantum needs to be 32, not 8.
MFC after: 1 month
Sponsored by: Chelsio Communications
For TOE TLS, we just want to advance the send pointer to skip over the
record just sent to the TOE. The recently added sbsndptr_adv() is
sufficient for that and is cheaper.
MFC after: 1 month
Sponsored by: Chelsio Communications
A kernel panic can occur if the cxgbe interface is DOWN
when activating netmap. This patch prevents the driver
from freeing up cxgbe netmap resources when they have not
been allocated.
Submitted by: Nicolas Witkowski <nwitkowski@verisign.com>
Reviewed by: np
MFC after: 1 week
Sponsored by: Verisign, Inc.
Differential Revision: https://reviews.freebsd.org/D17802
r254889 added tcp_state_change() as a centralized place to log state
changes in TCP connections for DTrace. r294869 and r296881 took
advantage of this central location to manage per-state counters.
However, TOE sockets were still performing some (but not all) state
change updates via direct assignments to t_state. This resulted in
state counters underflowing when TOE was in use. Fix by using
tcp_state_change() when changing a TOE connection's state.
Reviewed by: np, markj
MFC after: 1 month
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D17915
Previously attempts to read the MC region were failing since the
length was greater than 2^31.
Reviewed by: np
MFC after: 2 months
Differential Revision: https://reviews.freebsd.org/D17857
- Use PH_loc.eight[1] as a general 'cflags' (Chelsio flags) field to
describe properties of a queued packet. The MC_RAW_WR flag
indicates an mbuf holding a raw work request. mbuf_cflags() returns
the current flags.
- Raw work request mbufs are allocated via alloc_wr_mbuf() which will
allocate a single contiguous range to hold the mbuf data. The
consumer can use mtod() to obtain the start of the work request and
write the required work request in the buffer. The mbuf can then be
enqueued directly to the txq via mp_ring_enqueue().
- Since raw work requests might potentially send arbitrary work
requests, only set the EQUIQ and EQUEQ bits on work requests that
support them such as the normal tunneled Ethernet packet work
requests.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D17811
Currently this is a no-op, but will matter in the future when
cannot_use_txpkts() starts checking other conditions than just
needs_tso().
Sponsored by: Chelsio Communications
- Add a bus_child_location_str method to the nexus drivers that prints
out 'port=N' as the location string exported via devinfo and the
'%location' sysctl node.
- We can't use a bus_hint_device_unit to wire the unit numbers of
devices with a fixed devclass as the device gets assigned a unit in
make_device() before the device creator can set softc, etc.
Instead, when adding a child device, use a helper function much like
a bus_hint_device_unit method to look for wiring hints or to return
-1 to let the system choose a unit number. This function requires
an "at" hint for the port pointing to the nexus device and a "port"
hint listing the port number. For example:
hint.cxl.4.at="t5nex0"
hint.cxl.4.port="0"
wires cxl4 to the first port on the t5nex0 adapter.
Requested by: gallatin
MFC after: 2 months
interface into two groups. Filters can be used to match traffic
and distribute it across a group.
hw.cxgbe.nm_split_rss
Sponsored by: Chelsio Communications
subset of a VI's RSS indirection table.
This makes it possible to make groups out of rx queues and steer
different kinds of traffic to different groups. For example, an
interface with 8 rx queues could have all non-TCP traffic delivered to
queues 0-3 and all TCP traffic to queues 4-7.
Note that it is already possible for filters to steer traffic to a
particular queue or to distribute it using the full indirection table
(much like normal rx does).
Sponsored by: Chelsio Communications
